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Critical Behavior in the Ultrasonic Properties of Suspensions

Published online by Cambridge University Press:  10 February 2011

R. Esquivel-Sirvent  and
D. H. Green
R. Esquivel-Sirvent
Affiliation:
CMSS Program, Ohio University, Athens Ohio 45701 Department of Physics and Astronomy
D. H. Green
Affiliation:
Department of Geological Sciences.
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Abstract

Velocity and attenuation measurements of compressional waves at 3 and 5 MHz are presented for suspensions made of 1μm size particles of kaolinite or glass beads in water or light oil. At a critical concentration of 40%, the attenuation shows a sharp peak in attenuation as well as a sudden change in velocity. This behavior is observed in all suspensions and is independent of frequency or particle geometry. The observed behavior is consistent, with the excess attenuation induced by the fluid-shearing between particles. This behavior is the first experimental evidence for the existance of the freezing point, predicted by computer simulations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 407: Symposium M – Disordered Materials and Interfaces-Fractals, structure and Dynamics , 1995 , 99
Copyright
Copyright © Materials Research Society 1996

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References

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